Ticket #4295 (new bug)
Review higher-rank and impredicative types
|Reported by:||simonpj||Owned by:||simonpj|
|Keywords:||Cc:||nicolas.pouillard@…, v.dijk.bas@…, hackage.haskell.org@…, favonia@…, nathanhowell@…, rabeslik@…, ben@…|
|Type of failure:||None/Unknown||Difficulty:|
|Test Case:||Blocked By:|
Description (last modified by simonpj) (diff)
The ticket is a placeholder to remind me to work through the test cases for impredicative and higher rank types in the new typechecker. For now, I'm marking many of them as expect_broken on this ticket, although I think many of them really should fail.
- Many tests in boxy/ (see also #1330 for Church2)
- Lennart's blog post has an interesting use case of impredicative polymorphism; it worked in 7.0, but alas not in the new typechecker.